Vulcanizer.



C. H. PAYNE.

VULCANIZER.

APPucATloN FILED ocT.1,. 191s.--

1 45,96% Patented Nov. 6, 1917;

l l x n Zqmm-H- L 2 CHARLES H. PAYNE, 0F LOUISVILLE, KENTUCKY.

VULCANIZER.

Latisana.

Specification of Letters Patent.

Patented nav. e, aai a.

Application led October 4, 1916. Serial No. 123,706.

To all whom t may concern.'

Be it known that I, CHARLES H. PAYNE, a citizen of the United States, residing at Louisville, in the county of Jeerson and State of Kentucky, have invented certain new and useful Improvements in Vulcanizers, of which the following is a specification.

My invention relates to portable vulcanizing apparatus, and' its object is to facilitate the application of patches to the inner tubes of vpneumatic tires, orto similar articles which may be repairedv by vulcanizing a patch thereon.

My invention consists in the combination of parts and in the details of construction and arrangement of parts as will hereinafter be more fully described and claimed.

In the drawing:

Figure 1 is a plan view of a device embodymg my invention;

F ig. 2 is a vertical section on a plane corresponding to the line 2 2 of Fig. 1;

Fig. 3 is a similar section of the device open, before the Work and the inside p arts of the mechanism are brought into'position;

Fig. 4 is a vertical cross sectlon on a plane corresponding to the line 4-4 of Fi 1 ig. 5 is a detail plan View of a pan of medium size; and

slze.

As I prefer to construct my invention, there is a base plate 1, preferably made of heavy sheet metal and being of four-sided shape with rounded corners, and having, at opposite sides, ears 2 integral with 1t and turned into upright position, each ear 2 having a horizontal slot 3 through it.

An arm 4, preferably of channelhape,

comprises a short vertical part 5 and a longer horizontal" part 6, havlng a curved junction, with the sides of the channel lying F ig. 6 is a similar View of a pan of small' distance inward along the arm; so that this end of the arm is in the form of a fork.

A bolt 9 has its lower end flattened and formed lnto a hook l() and receives on its threaded upper end part a thumb nut 11.

These parts formedas above described are assembled by bringing the hook 7 of the arm 4 out through the slot 3 in the ear 2 of the base plate l; and by bringing the hook 10 of the bolt 9 in through the slot 3 of the -other ear 2 of said base plate. This hook 10 is preferably closed, so that the bolt 9 is permanently secured to the base plate 1 but I prefer to leave the hook 7 open so that ,the arm 4 may be detached from the base plate 1 when the device is to be packed or stored. The horizontal part 6 of the arm 4 is of such length, and has its slot 8 so positioned that when its hook 7 is in the ear 2, and the horizontal part 6 lies across the base plate 1, the bolt 9, when swung into vertical position, will come into the slot 8 with its thumb nut 1l over this forked end part of the arm 4.

About midwayof its length, the horizontal part 6 Iof the arm 4 has an opening l2 in the web -of the channel. The yoke 13 has a horizontally extended bottom or foot 14, and at its top, in the middle, has an upwardly projecting stud 15 surrounded at its iunction with the yoke by a shoulder 1 6. This stud 15 is adapted to enter the opening l2 in the arm 4, and the shoulder 16 receives the bottom of said arm 4. The inner tube 17, or other article to be patched, is laidrflat on the top of the base plate 1 with its punctured, torn or split part substantially in line with the ears 2,'Whi1e the clamping parts are in the open position illustrated in Fig. 3. The patch 18 is placed over the part, and upon this is placed the pan 19 (Fig. 2) containing the combustible 20, the burning of which is to gencrate heat for vulcanizing the patch 18 on the article 17. Such combustibles, being of various kinds and well known, need not be more specificallyl described herein. The

yoke 13 is then placed in position with its horizontal bottom 14 resting on the rim of the pan 19, and the arm 4'is brought down with its opening 12 receiving the stud 15 and the bottom of the arm bearing on the shoulder 16, as above described. Then the bolt 9 is brought up into the forked end Since the openings in inner tubes or similar articles which are to be patched are not pan and patch always ofthe same size, varying from a small puncture to a long tear or split, it is more economical to provide patches of different sizes. Moreover, the best results are attained when the pan 19 is of approximately the same shape as the patch, and of only slightly greater area, because the combustion then takes place uniformly throughout the area of the patch. Therefore, l so construct my device that it maybe used with patches and pans of various .sizesu Thus, as shown in lig. 2, the patch 18 and the pan 19 are long enough to extend almost entirely across the inner tube 17 this patch being large enough for the largest tear in the tube. The pans shown in Figs. 5 and 6 are suitable for use with patches of medium and small size; the latter being suitable for mere punctures. v

Not only is it highly desirable that 'the should be of approximately the same shape and dimensions, but it is highly important that the clamping pressure be applied in such a manner as not to destroy the continuity and uniformity of distribution of the combustible across the bottom of the pan. This is best accomplished by applying the'pressure as uniformly as possible throughout the 'eXtent of the rim of the pan. Therefore, in order to provide these conditions in conjunction with each of the various sized patches and pans, ll make the horizontal foot 14 of the yoke 13 in the shape of a series of arcs lying in the horizontal plane of the foot and succeeding outwardly in both directions from the middle, and joining at their ends as shown in Fig. 1. Thus, the outermost arcs 21 are adapted to press on the end parts of the rim of the largest pan 19; the intermediate arcs 22 are adapted to press on the end parts of the rim of the middle sized pan 23, shown in llig. 5; and the inner most arcs 24 are adapted to press on the end parts of the rim of the small circular pan 25, shown in Fig. 6. Tt will be seen that in each instance the longer or shorter side parts of the pan rim are pressed upon by the side parts 26 of the foot 14, formed by the junction of the arcs 21,22 and 24. The upright part of the yoke 13, as here shown, is made up of a series of downwardly bending branches 27, 28 and 29 that join the middle parts of the arcs 21, 2,2 and 24. By thus making this yoke, especially the bottom 14 thereof, of open construction, there is ample space for the inlet of air to the combustible 20 in any one of the pans narrates being used. Tt will, of course, be understood that where the combustible 20 is supplied in a single piece, this piece will be of a size and shape to readily enter the particular sized pan being used. Tn practice, T recommend that pans, patches and combustible pieces be supplied in three sizes.

Tf the tube is split, so that the greatest dimension of the patch must lie lengthwise of the tube, it is necessary only to turn the yoke 13 at right angles to the arm 4 so that the patches may be applied lengthwise of the tube. For this reason l prefer to make the stud 15 and opening 12, which it enters, of substantially circular form, so that the yoke 13 may be readily turned.

Tt is sometimes desirable to fix the device to a bench or similar supporting means, and, therefore, l prefer to provide the base plate 1 with openings 30V through which may be passed screws or other suitable fastening means, these openings preferably being countersunk so that the fastening means need not project above the surface of the plate.

l/lith the arm 4 and bolt 9 thrown outward away from the top of the base plate 1, as shown in Fig. 3, the placing of the article and its patch, and the pan and combustible, in position as hereinbefore described, is greatly facilitated because of the free access afforded. Moreover, the application of the clamping pressure, after the proper positioningy of the above parts, is most'readily accomplished on account of the readiness with which the arm 4 and bolt 9 with its thumb nut 11 are brought into cooperative relation with the yoke 13. Furthermore, since the arm 4 acts as a lever of the second order, and the manual application of pressure is at the end of the arm'4 while its transmission of this pressure to the yoke 13 and parts under the yoke is only about half as far from the fulcrum of the arm 4 where its hook 7 engages in the ear 2, a considerable mechanical advantage in application of pressure at the nut 11 is afforded. Therefore, with the bottom 14 of the yoke 13 so formed that it is pressed practically evenly all around the rim of either of the pans used, there is such a distribution of the relatively heavy pressure around the edge of the patch, that a very intimate junction of the patch with the material o the article being repaired is insured.

Having fully described my invention, what ll claim as new and desire to secure by lietters Patent is:

1. lin a vulcanizer, in combination with a support for the article to be vulcanized, a pan to bear on said article and hold a suitable combustible, a yoke having a bottom part bearing substantially uniformly on the :rim of said pan entirely therearound, and

having other parts to bear substantially uniformly on the rim of a pan of diderent size te@ i having other parts to bear substantially uniformly on the rim of a pan of different size entirely therearound, and a lever of the second order for applying clamping pressure to said yoke.

3. In a vulcanizer, incombination with a support for the article to be vulcanized, a

pan to bear on said article and'hold a suitable combustible, a yoke=having a bottom part hearing substantially uniformly on the rim of said pan entirely therearound, and having other parts to bear substantially uniformly on the rim of a pan ofdifferent size entirely therearound, an arm connected to one side of said support, and extending across and having its middle engaging With said yoke, and means connected to the other side of said support for applying pressure to said arm.

4. In a vulcanizer, in combination With a support for the article to be vulcanized, a pan to bear on the article and hold a suitable combustible, a yoke having a bottom part bearing substantially uniformly on the rim of said pan entirely therearound, and having other parts t0 bear substantially uniformly on the rim of a pan of, differentsize entirely therearound, and clamping means to apply pressure to said yoke comprising an arm hinged to one side of said support, and extending across and having its middle engaging with said yoke, a bolt connected to the other side of said support, and means threaded on said bolt for applying pressure to said arm.

5. In a vulcanizer, a 'base plate having upright ears at opposite sides, an arm comprlsing a vertical part connected to one of said ears, anda horizontal part extending across the top of said Abase plate, a` bolt connected to the other ear, said arm having a slot receiving said bolt, a nut threaded on .said bolt and bearing down on said arm, and a yoke comprising an upright part and a horizontal bottom to bear on the rim of a pan, and having a stud surrounded by a shoulder on the top of said upright part, said arm having, near the middle of its horizontal bottom thereof, an opening receiving said stud, and the bottom of said arm bearing on said shoulder. 4

6. In a vulcanizer, a base plate having upright slotted ears at opposite sides, an arm comprising a vertical part With a hook engaging in one of said slotted ears, and a horizontal part extending across the top of said base plate, a bolt having a hook engaging in the other slotted ear, said arm havin a slot receiving said bolt, a nut threaded on said bolt and bearing down on said arm, and a yoke comprising a horizontal bottom part with separated parts to bear on rims of pans of different sizes, and having a stud surrounded by a shoulder on the top of said upright part, sald arm having, near the middle of its horizontal part in the bottom thereof, an opening receiving said stud,` and the bottom of said arm bearing on said shoulder.

CHARLES H. PAYNE. IVitnesses:

W. W. DAvIEs, R. K. RIDDELL.

I part 1n the 

